Connecting-rod bearing.



E. BUGATTI.

CONNECTING RGD BEARING.

APllLlk/ATIOIT FILED NCIV. QZ', 1913,

Patented Nov. 24, 1914.

UNITED STATES ETTORE BUGATTI, OF MOLSHEIB-GERMANY.

CONNECTING-BOD BERING.

Specification of Letters Patent.

Patented Elev. 241,

. Application filed November 22, 1913. Serial No. 802,483.

' brasses of the bearing into a cage-and jourruling therein a series ofrolling elements with which then the crank pin coperates, whereby thefriction within the bearing with its incidental Wear and tear is reducedto a minimum.

In order to make the invention more readily understood, I will nowdescribe it with reference to the accompanying drawing, in which- Figure1 represents the head of a connecting rod, with the annular rollerretaining cage, a number of rollers, and the crank pin in section; Fig.2 shows a vertical section therethrough, with the crank pin in dottedlines.

The two-part head a, b of the connect-ing rod c is provided with abushing or cage d, preferably made in halves, as shown, and into thelatter are sunk, preferably ,from alternate sides, a series of bores e,extending partway into the annulus concentrically with, and axially of,the crank pin z'. Rolling elements f arethen introduced into these boresand the latter suitably closed, for instance by means of screw plugs g,threading into the outer faces of the bushing near the annular flangeparts between which the connecting-rod annulus is confined. Thethickness of thev bushing annulus is somewhat smaller than the dimm eterof the bores for the rolling members. so that oppositely disposed. slotsare presented as at L, through which the rollers jf extend internally incontact with the central crank pin z' and externally with the wall oithe connecting-rod annulus a, f5.5 The crank'pin friction in thisconstruction is greatly reduced, and the rollerscan readily be replacedin case of need.

l. In a roller bearing for connecting rods, in combination with theconnecting rod presenting a bearing annulus, a cage in said annulus,lateral fianges on said cage adapted to confine said annulus betweenthem, said cage having bores extending axially theref into fromalternate sides, elongated rolling elements in said bores, and aseparate elo'- sure for each of said bores.

2. In a roller bearing for connecting rods, in combination with theconnecting rod preseating at one end a bearing annales, a cage in saidannulus, flanges on said cave for con finir-' said annulus, said cagevided with bores axially extending thereinto from alternate sides and oa diameter larger than the thickness of the wall of said cage, wherebyfor each bore oppositely disposed slots are presented in said cage,reiling elements in said bores, operatively ii"- tingv the latter andprojecting respectively through the outer and inner slots in said cage,and meansior individually removably retaining said roliing elementsinsaid bores, comprising screw closures, one for each separate bore.

In testimony whereof I aiix my signature in presence o two witnesses.

ETTIE BUGATTI. Witnesses: 4

FRANK Romaine, J. Wmmnm Sonmmr.

ing pro-

